"Normally, the story would end there; you'd RMA the material, get an exchange for the lot, and move on. Except there were a couple of problems. So I kicked into forensic mode. Very low serial numbers are a hallmark of the "ghost shift", i.e. the shift that happens very late at night when a rouge worker enters the factory and runs the production machine off the books." A fascinating in-depth peek into the grey-market of China.